Visas
are government issued
passes allowing foreigners to enter the United States.
Visas may be issued on a temporary or permanent basis. Temporary visas
are non-immigrant status visas; permanent visas are immigrant status
visas. Depending upon type of visa, a person may be allowed to attend
school, obtain specialized training, vacation, marry a U.S. citizen,
compete athletically, receive medical treatment, work or remain indefinitely
in the United States. While holding one type of visa, a person may concurrently
apply for, or change, or "adjust status" while in the United States.
A person may, thereby, enter the country on a tourist visa and change
to a student visa in order to attend school. A person may come to work
in the United States under an alien labor certification program (temporary
visa) and while here might apply for and obtain permanent U.S. residency.
Since applying for a non-immigrant visa is generally quicker than applying
for permanent residency (i.e. a "Green Card") workers who are often
initially brought into the United States on long-term assignment, under
a non-immigrant visa (e.g. temporary labor certification), will seek
to obtain an immigrant visa and ultimately change their status to permanent
resident.
Including the six alien labor certification programs administered by the U.S. Department of Labor and discussed next, there exist over thirty-five (35) different visa programs whereby foreigners may legally enter the United States. (See Appendix A for Visa Series Listings and accompanying applicant information.)